/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.model;

import java.util.HashMap;
import java.util.Map;

import net.sf.l2j.gameserver.model.actor.instance.L2ControllableMobInstance;

/**
 * @author littlecrow
 *
 */
public class MobGroupTable 
{
	private Map<Integer, MobGroup> _groupMap;
    
    public static final int FOLLOW_RANGE = 300;
    public static final int RANDOM_RANGE = 300;
	
	public MobGroupTable() 
    {
		_groupMap = new HashMap<>();
	}
	
	public static MobGroupTable getInstance() 
    {
        return SingletonHolder._instance;
	}
	
	public void addGroup(int groupKey, MobGroup group) 
    {
		_groupMap.put(groupKey, group);
	}
	
	public MobGroup getGroup(int groupKey) 
    {
		return _groupMap.get(groupKey);
	}
    
    public int getGroupCount()
    {
        return _groupMap.size();
    }
    
    public MobGroup getGroupForMob(L2ControllableMobInstance mobInst)
    {
        for (MobGroup mobGroup : _groupMap.values())
        {
            if (mobGroup.isGroupMember(mobInst))
                return mobGroup;
        }
        return null;
    }
    
    public MobGroup[] getGroups()
    {
        return _groupMap.values().toArray(new MobGroup[getGroupCount()]);
    }
    
    public boolean removeGroup(int groupKey)
    {
        return (_groupMap.remove(groupKey) != null);
    }
    
    private static class SingletonHolder
	{
		protected static final MobGroupTable _instance = new MobGroupTable();
	}
}